Pluto is the second largest known dwarf planet and tenth largest orbiting the Sun. From its time of discovery in 1930 to 2006 it was considered to be the ninth planet in the solar system, but because additional objects have been discovered including Eris which is 27% more massive, the IAU...
Pluto (ˈpluːtəʊ) n (Celestial Objects) the second-largest dwarf planet in the solar system, located in the Kuiper belt; discovered in 1930 by Clyde Tombaugh (1906–97); classified as a planet until 2006, when it was reclassified as a dwarf planet. It has a diameter of 2390...
demote or devalue a person or thing; a pluto (not capitalized) is someone or something that has lost its status (On August 24, 2006, the International Astronomical Union, which decides the official names of all celestial bodies, stated that Pluto was not a true planet because it’s “too...
planet and ascribed to its axial rotation. The orbital parameters of Charon enableKepler's third lawto be used to estimate Pluto's mass as about 0.20% that of the Earth. Apparently Pluto is a low-density body, about 2320 km across, while Charon is about 1186 km in diameter; it is ...
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12.The Dwarf Planet:Pluto 332023-08 3 11.States of Matter 232023-08 4 10.Mosquito 372023-07 5 09.Burned Forests 442023-07 6 08.Hurricanes 342023-07 7 07.Bending Sticks:The Natural S… 582023-07 8 06.Training Honeybees 432023-07 9 05.Making Money 392023-07 10 04.A Card from Your ...
2008 the IAU created a new category,plutoids, within the dwarf planet category. Plutoids are dwarf planets that are farther from the Sun thanNeptune. All the dwarf planets except Ceres are plutoids; because of its location in the asteroid belt, Ceres is not. For a discussion of the ...
Eris, large, distant body of the solar system, revolving around the Sun well beyond the orbits of Neptune and Pluto in the Kuiper belt. It was discovered in 2005 in images taken two years earlier at Palomar Observatory in California, U.S. Before it recei
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